20435316 has 96 divisors (see below), whose sum is σ = 55738368. Its totient is φ = 5765760.

The previous prime is 20435287. The next prime is 20435341. The reversal of 20435316 is 61353402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160845 + ... + 160971.

It is an arithmetic number, because the mean of its divisors is an integer number (580608).

Almost surely, 2^20435316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20435316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27869184).

20435316 is an abundant number, since it is smaller than the sum of its proper divisors (35303052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20435316 is a wasteful number, since it uses less digits than its factorization.

20435316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20435316 is about 4520.5437726008. The cubic root of 20435316 is about 273.3970259397.

Adding to 20435316 its reverse (61353402), we get a palindrome (81788718).

The spelling of 20435316 in words is "twenty million, four hundred thirty-five thousand, three hundred sixteen".